There's the God within and the God without, and you have to attend to the alignment of the two of them.

I used to go to all the environmental conferences when I wasn't an invited speaker. I was just somebody in the back taking a lot of notes. It was when I was least visible that I came up with the most cool stuff. Now, because I don't get to be Clark Kent, I feel like my learning curve is slowing way down. I'm always afraid the conversation will move on and I'll be up at the front of the room saying last year's speech.

Steve Bannon is the biggest threat to democracy that we've faced since the Civil War, but in the Civil War the champion of democracy was in the White House. So, even then, we were probably in less danger as a country than we are right now.

I'm saying you should have the right not only to be an energy consumer but an energy producer. Follow the money to understand why my message keeps getting drowned out. Big oil and big coal are terrified by the green jobs message.

You don't get lower ratings playing the villain on reality TV.

Government-mandated and -subsidized ethanol from corn will go down in history as the "Iraq War" of environmental solutions: ill-considered, costly, and disastrous.

I'm willing to forgo the cheap satisfaction of the radical pose for the deep satisfaction of radical ends.